Arid
DOI10.1006/jare.2002.0990
Land-use intensity affects range condition in arid to semi-arid Namibia
Zeidler, J; Hanrahan, S; Scholes, M
通讯作者Zeidler, J
来源期刊JOURNAL OF ARID ENVIRONMENTS
ISSN0140-1963
EISSN1095-922X
出版年2002
卷号52期号:3页码:389-403
英文摘要

Range condition at sites of differing land-use intensity at a communal farm was assessed. Vegetation, soil and termite parameters were tested for their potential as indicators. The vegetation indicators did not discriminate between two sites of high and low land-use intensity. However, the soil fertility parameters provided interesting results. The phosphorus (P), nitrogen (N), organic carbon (OC), light fraction (LF), C:N and C:LF data indicate that nitrogen limitation is more critical under high land-use and grazing pressure. Organic carbon levels are generally low but reduced to critical levels under high land-use intensity; nutrients such as phosphorus and nitrogen are conserved in the system, whereas organic carbon losses are high and inputs low. The conversion of the ’active carbon pool’ into the ’slow pool’, a prerequisite for long-term soil resilience, is not taking place under high land-use intensity. Termites might play an important role in maintaining range condition. (C) 2002 Elsevier Science Ltd.


英文关键词desertification land degradation range condition assessment indicators soil fertility termites biodiversity land-use intensity
类型Article
语种英语
国家Namibia ; South Africa
收录类别SCI-E
WOS记录号WOS:000179759400010
WOS关键词SUBTERRANEAN TERMITES ; SOIL FERTILITY ; CARBON ; ECOLOGY ; ECOSYSTEMS ; SAVANNAS ; NITROGEN ; AFRICA ; ANTS
WOS类目Ecology ; Environmental Sciences
WOS研究方向Environmental Sciences & Ecology
资源类型期刊论文
条目标识符http://119.78.100.177/qdio/handle/2XILL650/143000
作者单位(1)Desert Res Fdn Namibia, Windhoek, Namibia;(2)Univ Witwatersrand, Dept Anim Plant & Environm Sci, ZA-2010 Wits, South Africa
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Zeidler, J,Hanrahan, S,Scholes, M. Land-use intensity affects range condition in arid to semi-arid Namibia[J],2002,52(3):389-403.
APA Zeidler, J,Hanrahan, S,&Scholes, M.(2002).Land-use intensity affects range condition in arid to semi-arid Namibia.JOURNAL OF ARID ENVIRONMENTS,52(3),389-403.
MLA Zeidler, J,et al."Land-use intensity affects range condition in arid to semi-arid Namibia".JOURNAL OF ARID ENVIRONMENTS 52.3(2002):389-403.
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